Failure analysis of a petrochemical plant reducing gear

被引：10

作者：

Griza, Sandro ^{[1
]}

Santos, Antonio Pereira ^{[1
]}

Azevedo, Thiago Figueiredo ^{[1
]}

Fortis Kwietniewski, Carlos Eduardo ^{[2
]}

Reguly, Afonso ^{[2
]}

Strohaecker, Telmo R. ^{[2
]}

机构：

[1] Univ Fed Sergipe, Programa Posgrad Ciencia & Engn Mat, Sao Cristovao, Brazil

[2] Univ Fed Rio Grande do Sul, Programa Posgrad Engn Met Minas & Mat, Porto Alegre, RS, Brazil

来源：

ENGINEERING FAILURE ANALYSIS | 2013年 / 29卷

关键词：

Fracture mechanics; Fatigue; Crack growth; Stress concentration; Gear; COMPUTATIONAL MODEL; FATIGUE FAILURES; BENDING FATIGUE;

D O I：

10.1016/j.engfailanal.2012.11.013

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study aims to investigate the cause of failure of an 845 mm external diameter reducing gear that operated during 30 months in a petrochemical plant. The failure analysis procedure included material characterisation (microstructure, chemical composition and microhardness), fracture surface evaluation, and stress distribution by finite elements on critical regions of the gear. Fracture mechanics and fatigue crack growth were also used to develop a da/dN-triangle K curve and then determine the gear material crack growth resistance. Results indicate that the gear was not properly manufactured and failure occurred as a result of a fatigue process facilitated by a manufacturing defect. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：56 / 61

页数：6

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